Adjustable torque limiting apparatus

Details Adjustable torque limiting apparatus Adjustable torque limiting apparatus

1980-06-05

1982-07-13

Burns, Wendell E.

Rotary shafts, gudgeons, housings, and flexible couplings for ro

With auxilliary indicator or alarm

192 56R, 464 41, 464 47, 464178, F16D 702

Patent

active

043387985

ABSTRACT:
Apparatus for limiting the amount of torque to a driven shaft having a tool for applying power to a workpiece is continuously adjustable throughout a predetermined range. A housing defines a cylindrical chamber open at one end having an adjustable plate disposed therein. First and second shafts enter the housing through opposite ends and have first and second disks attached thereto within the housing. Disks are frictionally coupled by a force generated by a spring disposed about the first shaft between the adjustable plate and the first disk. When the preselected limit of torque is exceeded the disks slip with respect to one another thus, limiting the amount of torque delivered by the apparatus. Adjustment of the plate selectively increases or decreases the compression of the spring and thus, alters the maximal amount of torque that can be delivered. An alternative embodiment is disclosed for incorporating the apparatus within the housing of a power tool such as a drill motor.

REFERENCES:
patent: 1024151 (1912-04-01), Smith
patent: 1593732 (1926-07-01), Street
patent: 2743637 (1956-05-01), Redmon
patent: 2943466 (1960-07-01), Elliott
patent: 3116618 (1964-01-01), Lacey
patent: 3180113 (1965-04-01), Onyskin
patent: 3233429 (1966-02-01), Kohen et al.
patent: 3854561 (1974-12-01), Conoe

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